| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply controller which can prevent current counter-flow and suppress loss.SOLUTION: A power supply controller comprises: a power conversion unit 3 which includes a first switching element, and converts and outputs power inputted from a DC power source by performing switching operation of the first switching element; a transformer 4 which includes a primary winding 41 and a secondary winding 42, and the primary winding 41 is electrically connected with output of the power conversion unit 3; a synchronous rectification unit 5 which includes a second switching element for rectification, is electrically connected with the secondary winding 42, and rectifies current by performing switching operation of the second switching element in synchronization with switching of the first switching; a smoothing circuit 6 which is electrically connected with output of the synchronous rectification unit 5; a current sensor 21 which detects current counter-flow from the smoothing circuit 6 to output of the synchronous rectification unit 5; and a controller 10 which controls the switching of the first switching element and the second switching element. |
